Mathematics: What is 2/3 a number plus 4 equals 7

What is 2/3 a number plus 4 equals 7 - id23473488816, ReaLily

Ответ:

alexgold3

08.01.2022

Two-thirds ( $\frac{2}{3}$ ) a number (n) plus (+) 4 equals (=) 7.

$\frac{2}{3}$ n + 4 = 7 Subtract 4 from both sides
$\frac{2}{3}$ n = 3 Multiply both sides by $\frac{3}{2}$ to cancel out the fraction ( $\frac{2}{3} x \frac{3}{2} = 1$ ) (3 x $\frac{3}{2}$ = $\frac{3 x 3}{2}$ = $\frac{9}{2}$ = $4 \frac{1}{2}$
n = 4 $\frac{1}{2}$

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Ответ:

cuhh

03.12.2022

Mathematics

$3,000

Step-by-step explanation:

This problem is based on compound interest, and the expression for the compound interest is given as

Given Data

A=final amount = ?

P=initial principal balance = $2,500

r=interest rate = 2.1%= 0.021

t=number of time periods elapsed= 14 years

Substituting our data into the compound interest formula we can solve for the final amount

$A= 2500(1+0.021)^1^4\\A= 2500(1.021)^1^4\\A= 2500*1.3377\\A= 3344.25\\$

Hence to the nearest hundred we have the account balance has $3,000

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What is 2/3 a number plus 4 equals 7

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